I expect a large portion of the current (non-paying!) CentOS community will feel hijacked.
I've installed both the RHEL 7 beta and RC1. I've liked what I've seen so far, I just hope the churn in the program availability on the desktop is kept up with to the point that I can use current multi-media tools. I'm not hopeful.
Here's my current use of Linux: I admin two RHEL servers for work. I run Fedora 20 in a laptop VM and at home on the desktop, as well as a CentOS 6 server. I attempted to run a couple of CentOS 6 desktops at home, but failed miserably with multimedia and video-editing tools.
Since my recent bad experiences with Fedora 20, and hearing that Fedora is for working on, not to actually work, I'm reconsidering what to run on the desktop.
I almost installed Ubuntu the other day, because of their reputation to be more stable than Fedora and more up-to-date than RHEL. I'd rather not, but I may have to go there. Guess what I would then be recommending for the next OS refresh at work?
I've been using Redhat since 5.2 (that's 1998). It's a bit depressing.